Index: views_bulk_operations/actions/modify.action.inc
===================================================================
--- views_bulk_operations/actions/modify.action.inc	(revision 1268)
+++ views_bulk_operations/actions/modify.action.inc	(working copy)
@@ -278,6 +278,7 @@
       '#theme' => 'token_tree',
       '#token_types' => array($token_type, 'site'),
       '#global_types' => array(),
+      '#dialog' => TRUE,
     );
   }